No heat flow in ground-state graphene

The ground state of electrons in undoped graphene at high magnetic field is still not fully known. Measurements of thermal conductance could help to differentiate between the various theoretically proposed candidates. Delagrange et al. report such measurements and find that the thermal conductivity is vanishingly small, in contradiction to many of the predictions.

See Delagrange et al.

Image: Francois Parmentier, SPEC – CNRS UMR3680. Cover design: Laoise Mac Gabhann